London - Sex, bondage, Iris Robinson, a Milly called Maggie and a man who goes by Mr Red, White and Blue.

These are just a few of the ingredients that have seen a spoof Belfast version of 'mummy porn' bestseller 50 Shades of Grey become an Internet sensation.

Novice writer Leesa Harker is the Shore Road woman responsible for the hilarious Facebook page 50 Shades of Red, White and Blue, which has earned her more than 16,000 fans since she launched it just over a week ago.

The 34-year-old mother-of-two has now written 10 chapters after being inspired by the hype around the E L James 50 Shades of Grey trilogy.

Leesa gave her story a Northern Ireland twist with the characters Maggie and Sally-Ann, threw in a few bonfires and some Buckfast, and the rest wrote itself.

Northern Ireland's First Lady Iris Robinson gets a controversial mention in the story, described as an ageing temptress, and even Sunday Life gets a namecheck.

Sunday Life can't print much from 50 Shades of Red, White and Blue because of its saucy nature, and Leesa herself says she is in “big trouble” with her parents when they get home to Belfast from holiday and read her rude writings.

“They're in Turkey at the minute, so they don't have a clue what's been going on,” she said.

“When they get home and see how rude it is, I am absolutely dead, but I'll just have to deal with that when it happens.”

Leesa admits she's only read three chapters of the original 50 shades book because she thought it was “a load of old rubbish”.

“Everyone was going on about it so I just started writing as if the books were set in Belfast to give my friends a bit of a laugh.

“I'm delighted at how popular it's been but I'm totally overwhelmed too because it is real toilet humour, it just shows there's people out there with as sick a sense of humour as me.

“I think every woman in Belfast has a wee bit of Milly in them, so they find it funny.”

The 50 Shades of Grey trilogy has sold around 20 million copies worldwide in 37 countries.

And while Leesa isn't holding out hope of replicating that success, she's hoping the popularity of 50 Shades of Red, White and Blue will help to secure her a deal to publish a novel she's working on called Three Blind Dates and is meeting an agent.

Despite her new plans, Leesa has promised not to leave her 50 Shades of Red, White and Blue fans high and dry and a downloadable version of the story is now available on Amazon. - The Independent